Know Your Environment. Protect Your Health.

Dibromochloromethane

Perry Water System

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

48

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
20190.125 ppb81ND - 1.000 ppb
20200.163 ppb81ND - 1.30 ppb
20210.463 ppb83ND - 1.40 ppb
20220.403 ppb83ND - 1.10 ppb
2023ND80ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-0518039009702ND
2018-02-0518039009602ND
2018-04-3018122001302ND
2018-04-3018122001202ND
2018-08-0618220004702ND
2018-08-0618220004802ND
2018-10-2918304003602ND
2018-10-2918304003502ND
2019-01-2919031010802ND
2019-01-3019031010702ND
2019-04-23191150103021.000 ppb
2019-04-2319115010202ND
2019-07-2319206009201ND
2019-07-2319206009102ND
2019-10-2119295000802ND
2019-10-2119295000902ND
2020-01-29200300154021.30 ppb
2020-01-2920030015502ND
2020-05-0520128000702ND
2020-05-0520128000602ND
2020-08-0520220001502ND
2020-08-0520220001402ND
2020-10-2720303005902ND
2020-10-2720303005802ND
2021-02-0221036000502ND
2021-02-02210360006021.40 ppb
2021-05-0321125000802ND
2021-05-03211250009021.20 ppb
2021-08-0421217014602ND
2021-08-0421217014502ND
2021-10-2721301010202ND
2021-10-27213010101021.10 ppb
2022-02-01220330050021.10 ppb
2022-02-0122033004902ND
2022-05-11O198013-THM-1ND
2022-05-11O198014-THM-1ND
2022-08-01O200289-THM-1ND
2022-08-01O200288-THM-11.05 ppb
2022-10-31O203575-THM-1ND
2022-10-31O203574-THM-11.07 ppb
2023-02-07O205978-THM-1ND
2023-02-07O205979-THM-1ND
2023-05-09O208883-THM-1ND
2023-05-09O208882-THM-1ND
2023-07-31O211203-THM-1ND
2023-07-31O211202-THM-1ND
2023-11-01O213646-THM-1ND
2023-11-01O213645-THM-1ND